Change these equations into the equations of linear functions.
Draw function graphs and read coordinates of the intersection.
Draw function graphs and read coordinates of the intersection.
PLS HELP AND ANSWER QUICK
2 answers:
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Answer:
Step-by-step explanation:
In order to write the equation of the line in point-slope form that goes through those points, we need to know the slope of that line. Therefore,
So the slope is 2. Now we'll pick a point and use it to write an equation in point-slope form. I'll use the first point given to see if that's the one used in any of the answers : (10, 5)
y - 5 = 2(x - 10). That's choice B. Let's see, just in case there are 2 answers to this, what the equation would be using the other point (4, -7):
y - (-7) = 2(x - 4) and simplified:
y + 7 = 2(x - 4) is the other equation. Since that's not a choice, the only answer is B
Answer:
base = 28 inches ad height = 9 inches
Step-by-step explanation:
The area (A) of a triangle is calculated as
A = bh ( b is the base and h the height )
Let height = h then b = 2h + 10 = 2(h + 5) and A = 126, thus
2(h + 5) × h = 126, that is
h(h + 5) = 126 ← distribute left side
h² + 5h = 126 ( subtract 126 from both sides )
h² + 5h - 126 = 0 ← in standard form
(h + 14)(h - 9) = 0 ← in factored form
Equate each factor to zero and solve for h
h + 14 = 0 ⇒ h = - 14
h - 9 = 0 ⇒ h = 9
However, h > 0 thus h = 9
height = 9 inches and base = (2 × 9) + 10 = 18 + 10 = 28 inches