7x – 3y = 21 Write original equation.
7x – 3(0) = 21 Substitute 0 for y.
x= = 3 Solve for x.
To find the y-intercept, substitute 0 for x and solve for y.
7x – 3y = 21 Write original equation.
7(0) – 3y = 21 Substitute 0 for x.
Y= = –7 Solve for y.
The x-intercept is 3. The y-intercept is –7
