Question

Find the x-and y-intercepts.21x + 3y = -63

Answer 1

to find the x intercept, we need to replace y by 0, so we get

`\begin{gathered} 21x+3\cdot0=-63 \\ 21x=-63 \\ x=(-63)/(21)=-3 \end{gathered}`

to find the y-intercept we need to replace x by 0

`\begin{gathered} 21\cdot0+3y=-63 \\ 3y=-63 \\ y=(-63)/(3)=-21 \end{gathered}`