dnjames01
29.11.2020 •
Mathematics
PLEASE HELP 1.) Line a passes through points (-2, 1) and (2, 9). Write an equation in slope intercept form that is parallel to line a. 40POINTS
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Ответ:
y=2x
Step-by-step explanation:
compute the slope first-
(-2,1) and (2,9)
m = 9-1/2-(-2) = 8/2+2= 8/4 = 2
knowing the slope take a given point and substitute it's x and y values into the equation to solve for 'b' the y-intercept-
y = mx + b,
1 = 2(-2) + b,
1 = -4+ b,
b = 5
our equation is y = 2x + 5
if you want an equation parallel to the line it has to have the same slope. Take y = 2x
Ответ:
y=2x+5
Step-by-step explanation:
To find line a in slope-intercept form, we first want to find the slope. The formula for slope is .
Now that we know the slope, we can plug in any point to find the y-intercept.
y=2x+b [plug in any point]
9=2(2)+b [multiply]
9=4+b [subtract both sides by 4]
b=5
The final equation is y=2x+5.
Ответ:
Step-by-step explanation:
Yes