Find the value of the missing coefficient a in the equation y = a(x - 3)(x + 5) if the graph goes through the point (1, -6)
2 answers:
Answer:
missing coffecient is 8
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
y-(a*(x-3)*(x+5))=0
STEP
1
:
Equation at the end of step 1
y - (a • (x - 3) • (x + 5)) = 0
STEP
2
:
Equation at the end of step 2
y - a • (x - 3) • (x + 5) = 0
STEP
3
:
Equation at the end of step 3
y - ax2 - 2ax + 15a = 0
STEP
4
:
Solving a Single Variable Equation:
4.1 Solve y-ax2-2ax+15a = 0
In this type of equations, having more than one variable (unknown), you have to specify for which variable you want the equation solved.
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