Answer:
I hope I helped you^_^
PLEASE HELP THIS IS REALLY URGENT!!! please solve for the point slope and slope intercept for all of the questions and show work
. also please specify which answers go to which problem thank you so much
1 answer:
Answer:
Step-by-step explanation:
y - = m( x -
) point - slope form of linear equation ;
y = mx + b slope-intercept form of linear equation, (0, b) are coordinates of y-intercept ;
<em>(b).</em> y - 3 = - 7(x - 8)
<u><em>y = - 7x + 59</em></u>
<em>(c).</em> y - (- 2) = [ x - ( - 7)] ⇔ y + 2 =
( x + 7)
<u><em>y = </em></u><u><em> x + </em></u>
<u><em> </em></u>
<em>(d).</em> <u><em>y = - </em></u><u><em> x + 9</em></u>
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Answer:
y = -x + 9
Step-by-step explanation:
You are given (-5,14), (-2,11), (1,8), and (4,5). Your first objective is to find the slope.
Slope is delta y divided by delta x - the amount of height the graph gains divided by the amount of horizontal length the graph gains. Take any two points and plug it into this: .
i.e. (-2,11) and (4,5): which is
, or -1. Thus, the slope is -1.
We now have y = -1(x) + b, or just y = -x + b.
Next, find the y-intercept. Set the value of x to 0, as the y-intercept is found along the y-axis, which is at the horizontal center of the graph, 0. We now know that the y-intercept is (0,y). To find the y-value, plug one of the coordinate pairs of choice into x and y.
i.e. (-5,14): 14 = (-1)(-5) + b
14 = 5 + b
14 - 5 = 5 + b - 5
9 = b
So, the y-intercept is (0,9).
Finally, the equation is:
y = -x + 9