Answer:
Step-by-step explanation:
-x + 2y = 8
-2x + y = -5
2x - 4y = -16
-2x + y = -5
-3y = -21
y = 7
-x + 14 = 8
-x = -6
x = 6
(6,7)
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
Answer:
c
Step-by-step explanation:
You put the line in the middle of all the points. Example above