7x-3y=21
Find the intercept
1 answer:
Y-intercept:
Plug in 0 for 'x' to find the y-intercept:
7x - 3y = 21
7(0) - 3y = 21
0 - 3y = 21
-3y = 21
Divide -3 to both sides:
y = -7
So the y-intercept is -7.
x-intercept:
7x - 3y = 21
Plug in 0 for 'y' to find the x-intercept.
7x - 3(0) = 21
7x - 0 = 21
7x = 21
Divide 7 to both sides:
x = 3
So the x-intercept is 3.
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