1.The equation of line CD is (y−3) = − 2 (x − 4). What is the slope of a line perpendicular to line CD? 2.The equation of line AB is y = 2x + 4. Write an equation of a line parallel to line AB in slope-intercept form that contains point (3, −2). 3.The equation of line QR is y = negative 1/2x + 1. Write an equation of a line perpendicular to line QR in slope-intercept form that contains point (5, 6). 4.Line WX contains (−1, 2) and (4, 12) Line YZ contains points (5, 8) and (−2, −6). Lines WX and YZ are 5.Line CD contains points A (4, −7) and B (4, 8). The slope of line CD
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Answer 1
Answer:
so here's how to do it, slope intercept form is y=mx+b m is the slope, b is the y- intercept, X is your unknown variable.
you need to solve to get y by its self to get your slope.
for perpendicular lines flip the slope
ex 1, smy=2x+6 --- slope of a perpendicular line will be 1/2
ex 2, y=3/2+8 ---8 perpendicular lien would have a slope of 2/3
parallel lines have the same slope so any equation with with the same slope will be parallel if it has the same degree.
ex. y=2x+14 is parallel to y= 2x+56
slope can be found using the following formula if you have two sets of points on the same line
A China cup and saucer cost 12$. The cup on its own cost 3$ more than the saucer. Form an eqaution for s and solve it. Find the cost of the cup
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If the cup = S + 3 and the saucer = S then
(S + 3) + S = 12 2s + 3 = 12 2s = 9 s = 4.50
So by itself the saucer costs $4.50. To find the cost of the cup look to the beginning of the problem where we learned that
Cup = S + 3 cup = 4.50 + 3 cup = 7.50
So the saucer is $4.50 and the cup is $7.50...
4.50 + 7.50 = $12.00
It checks!
The quotient of a number and 3 is decreased by 121. The result is -164.
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quotient of number and 3 decreased by 121 is -164 change them to equations
121 - = - 164 - = -285 - n = -855 n = 855
check: 121 - = -164 121 - 285 = -164 -164 = -164
What geometric figure would you get if you joined the endpoints of two rays and pointed the rats in opposite directions?Pls help me ASAP, this is due today. I would really appreciate it.