Slope-intercept form is simply y=mx +b
your equation is 3x -y = 7
rearranging that to y = mx +b makes it look like this:
- y = -3x +7
y =3x -7
making m =3 and b=-7, so your answer is C
Answer:
tanA = 
Step-by-step explanation:
tanA =
=
=
= 
Simple.....
you have 5 dollars that it costs PLUS 0.50 PER mile.
Writing your equation...
0.5m (m=per mile extra)
5(how much it initially costs)
0.5m+5
Thus, your answer, C.
5. Answer: see explanation
<u>Step-by-step explanation:</u>
If the roots are m and 3m, then x = m and x = 3m
⇒ x - m = 0 and x - 3m = 0
⇒ (x - m)(x - 3m) = 0
⇒ x² - 4mx + 3m² = 0
Since x² + px + q = 0 then p = -4m and q = 3m²
3p² = 3(-4m)² 16q = 16(3m²)
= 3(16m²) = 48m²
= 48m²
3p² = 48m² = 16q ⇒ 3p² = 16q
**********************************************************************************************
6. Answer: 8 or 18
<u>Step-by-step explanation:</u>
The Area of the entire rectangle (A = L × w) is 12 × 10 = 120
The Area of the shaded region is 72, so the Area of the non-shaded region is 120 - 72 = 48.
There are two non-shaded triangles.
- Bigger non-shaded Δ: L = 12-x, w = 10 ⇒

- Smaller non-shaded Δ: L = x, w = x ⇒

Combine the Areas of both triangles and set it equal to the Area of the non-shaded region:

Area of ΔBEF:

<span><span>(<span>23</span>)</span><span>−3</span></span><span><span><span>
</span></span></span><span><span><span>(<span>32</span>)</span>3
</span></span><span><span><span><span>(<span>32</span>)</span>*<span>(<span>32</span>)</span></span>*<span>(<span>32</span>)
</span></span></span><span><span><span><span>3*3</span>*3</span><span><span>2*2</span>*2</span></span></span><span>=<span><span>33</span><span>23
</span></span></span><span><span><span>278</span></span><span>(Decimal: 3.375)</span></span>