Question

What are the x and y-intercepts of the line described by the equation?

Answer 1

To find the x-intercept, substitute 0 for y and solve for x.
-6x + 3(0) = 18.9
-6x = 18.9
x = 18.9 / -6
x = -3.15 <-- Your x-intercept is (-3.15,0) 

To find the y-intercept, substitute in 0 for x and solve for y.
-6(0) + 3y = 18.9 
3y = 18.9
y = 18.9/3
y = 6.3 (0,6.3) <-- Your x-intercept is (0,6.3)

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