When solving an equation, there are three ways you can do it:
1) Graphing 2) Substitution 3) Elimination
We will solve this using substitution
Step 3: Solve
When solving with substitution, you substitute the first equation into the second. So, we will get the value of y and substitute into where y is in the second equation.
y=4x+10 and y=3x+9 goes into:
4x+10=3x+9
Now let’s solve.
4x+10=3x+9
*subtract 3x on both sides*
4x+10=3x+9 -3x -3x _________ x+10=9
*subtract 10 on both sides*
x+10=9 -10 -10 ______ x=-1
Now we have the value of x. Let’s substitute this into the first equation and find y.
y=4x+10
y=4(-1)+10
y=-4+10
y=6
Now we have y! The ordered pair of this would be (-1,6). And that’s your answer.
Hope this helps comment below for more questions :)
