What is the rule for the linear function shown in the graph?
1 answer:
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Answer:
A. x = -2, x = 1.25
Step-by-step explanation:
<u>Use the </u><u>quadratic</u><u> formula</u>
x =
Once in standard form, <u>identify</u> a, b, and c from the <u>original</u> equation and plug them into the <u>quadratic formula</u>.
4x² + 3x - 10 = 0
a = 4
b = 3
c = - 10
x =
<u>Simplify</u>
<u>Evaluate the exponent</u>
x =
<u>Multiply</u> the numbers
x =
Add the <u>numbers</u>
x =
Evaluate the <u>square root</u>
x =
<u>Multiply</u> the numbers
x =
<u>Separate</u><u> the equations</u>
To solve for the <u>unknown variable</u>, separate into two equations: one with a plus and the other with a minus.
x =
x =
<u>Solve</u>
Rearrange and isolate the <u>variable</u> to find each <u>solution</u>
x = - 2
x = 1.25