Question

For solving the equation $x^2+4x-7=0$ using the graph$y=x^2$, which two graphs need to be drawn?

• A. $y=x^{2}andy=7-4x$
• B. $y=x^{2}andy=-7+4x$
• C. $y=-x^{2}andy=7-4x$
• D. $y=x^{2}andy=4x$

Answer 1

The correct option is A $y=x^{2}andy=7-4x$

$ForthePointofintersectionofthetwographsgivenwehavetosolvetheequations{x}^2+4x-7=0y=x^2,(-)———————y=7-4x———————Sowehavetofindtheintersectionpointofy=x^{2}andy=7-4x$