Answer:
Step-by-step explanation:
2
x
−
y
=
4
Solve for
y
.
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y
=
−
4
+
2
x
Rewrite in slope-intercept form.
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y
=
2
x
−
4
Use the slope-intercept form to find the slope and y-intercept.
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Slope:
2
y-intercept:
−
4
Answer:
Step-by-step explanation:
Multiply the first equation by 4,and multiply the second equation by 1.
4(x−3y=−6)
1(−4x+9y=9)
Becomes:
4x−12y=−24
−4x+9y=9
Add these equations to eliminate x:
−3y=−15
Then solve−3y=−15for y:
−3y=−15 (Divide both sides by -3)
y=5
Now that we've found y let's plug it back in to solve for x.
Write down an original equation:
x−3y=−6
Substitute5foryinx−3y=−6:
x−(3)(5)=−6
x−15=−6(Simplify both sides of the equation)
x−15+15=−6+15(Add 15 to both sides)
x=9
Answer:
(x-5)
Step-by-step explanation:
Factors to be (x-5)^2 so each side is (x-5)
Answer:
10
Step-by-step explanation:
Answer:
a = 10
b = 4
Step-by-step explanation:
a) AB = 4 + x
b)
(x + 6)(x + 4) = 28
x^2 + 10x + 24 = 28
x^2 + 10x = 4
ax = 10x
a = 10
b = 4