1. The equations in this example are already set equal to "y". Identify the slope and y-intercept in each equation. Remember: y = mx + b, where m = slope and b = y-intercept.
y = 2x + 1
slope = 2
y-intercept = 1
y = -x + 7
slope = -1
y-intercept = 7
2. Graph the lines.
This example used the slope-intercept method of graphing straight lines.
The b-value tells you where the line crosses the y-axis.
The slope, m, tells you the rise over the run.
If you need help graphing lines, see Graphing Linear Equations.
Find the intersection point (where the lines cross).
These lines cross at the point (2,5).
This means the solution to this system is:
Solution: x = 2 and y = 5.
graph1
3. CHECK: Substitute x = 2 and y = 5 into BOTH of the original equations. If your solutions are correct, both equations will be true!
y = 2x + 1
5 = 2(2) + 1
5 = 5 (check)
y = -x + 7
5 = -(2) + 7
5 = 5 (check)
How much money did Kari spend?
A.
Divide $13 ÷ 3. Then add $5 and 4. Then add the quotient and the sum together and subtract 3.
B.
Add $5 and 3. Then add $3 and 4. Then add $13 and 3. Then add the 3 sums together.
C.
Multiply $5 × 3. Then multiply $3 by 4. Then multiply $13 by 3. Then add the products together.
D.
Subtract 3 from $13. Then subtract $3 from 4. Add the two differences together and multiply by $5.
A
$140
B.
$240
C.
$286
Answer:
c) 286
Step-by-step explanation:
Since Annabelle paid 200 euros
And Myra wants to pay Annabelle back in U.S. dollars.
Let Myra paid amount to Annabelle in U.S. dollar be x
\frac{1}{0.7}=\frac{x}{200}
⇒\frac{1*200}{0.7}=x
⇒\frac{200}{0.7}=x
⇒285.7=x
⇒285.7≈286
so, myra paid annebelle $286 usd
Answer:
C.
$286
Step-by-step explanation:
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Write this In slope intercept form
Thx!
The value of the equation A = -6x + 7 ( 2x + 1 ) - 12 is A = 8x - 5
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the equation be represented as A
Now , the value of A is
A = -6x + 7 ( 2x + 1 ) - 12 be equation (1)
Now , let the equation B = 8x - 5
On simplifying the equation (1) , we get
A = -6x + 7 ( 2x ) + 7 ( 1 ) - 12
A = -6x + 14x + 7 - 12
On further simplification , we get
A = 8x - 5
So , the value of A = B
Therefore , the value of A is 8x - 5
Hence , the equation is A = 8x - 5
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Answer:
The Answer is A = -6x + 7 ( 2x + 1 ) - 12 is A = 8x - 5
Step-by-step explanation:
I got it right