We learned that ratios are value comparisons, and proportions are equal ratios. Ratios can be written with colons or as fractions. So, to compare the number of girls to boys in a litter of puppies, we can write 2:4 or 2/4 to say that there are two girls to four boys.
Answer:
A(8)=32cm
B(9)=36cm
C(10)=40cm
Step-by-step explanation:
let 8:9:10=A:B:C
∑ratios=8+9+10=27
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Step-by-step explanation:
Answer: 1) y = 4x + 5
2) y = 3x + 2
3) y = (-5/6)x + 1/3
<u>Step-by-step explanation:</u>
Use the Point-Slope equation: y - y₁ = m(x - x₁) where
- (x₁, y₁) is a point on the line
- m is the slope
<u>(x₁, y₁) = (-1, 1) m = 4</u>
y - 1 = 4(x + 1)
y - 1 = 4x + 4
y = 4x + 5
<u>(x₁, y₁) = (1, 5) m = 3</u>
y - 5 = 3(x - 1)
y - 5 = 3x - 3
y = 3x + 2
<u>(x₁, y₁) = (-2, 2) m = -5/6</u>
y - 2 = -5/6(x + 2)
y - 2 = (-5/6)x - 5/3
y = (-5/6)x + 1/3
Answer:
m equals StartFraction y minus b Over x EndFraction
Step-by-step explanation:
The standard equation of a line is expressed as;
y = MX+b where;
m is the slope
cmb is the intercept
We are to get the equivalent expression for finding the slope.
Make m the subject of the formula to get this as shown;
From the equation;
y =MX+b
Subtract c from both sides;
y-b = MX+b-b
MX = y-b
Divide through by x;
mx/x = (y-b)/x
m = (y-b)/x
Heme the required expression is m = (y-b)/x OR m equals StartFraction y minus b Over x EndFraction
