Solve the following equations simultaneously.
Equation $1$1 | $y=x^2+3x$y=x2+3x |
Equation $2$2 | $y=-x+21$y=−x+21 |
First solve for $x$x.
Find the value of $y$y at the point of intersection where $x=3$x=3.
Find the value of $y$y at the point of intersection where $x=-7$x=−7.
When solving $y=x^2-3x+1$y=x2−3x+1 and $y=x+6$y=x+6 simultaneously, one point of intersection is at $x=-1$x=−1. What is the $y$y-coordinate at this point?
Solve the following equations simultaneously :
Equation 1 | $y=-2x-1$y=−2x−1 |
Equation 2 | $y=x^2-8x+8$y=x2−8x+8 |
Solve the following equations simultaneously.
Equation 1 | $y=x^2$y=x2 |
Equation 2 | $y=-7x$y=−7x |