Answer:
Simplified - 2x(-x+4), Solution - -2x(-x+4)
After 2 hours it should have 9 gallons of gas left
There are 2 types of ratios: Part-to-Wholes, and Part-to-Part ratios.
Part-to-part ratios show the relationship between the two groups.
Lets say theres 10 fruits in a fruit bowl.
If you have 3 apples, and 7 oranges, then the ratio is 3:7 as the part-to-part ratio. But the part-to-whole ratio would be either 3:10 ( for apples) or 7:10 (for oranges)
Answer:
y = 2x + 1
Step-by-step explanation:
- Slope-int form: y = mx + b
- m = slope or rise/run
- b = y-intercept
Given:
- Point (2, 5)
- m (slope) = undefined
When a slope is undefined, the line is a vertical line (it rises but doesn't "run").
To find m, use the given point's x-coordinate because the line you're trying to find will run vertically through that point.
- (x, y) = (2, 5); x = 2
- m = 2
Now the equation becomes y = 2x + b.
To find b, substitute the given point and the found slope into the formula, then solve for b.
- 5 = 2(2) + b
- 5 = 4 + b
- 5 - 4 = b
- b = 1
Now that you know what b is, you can substitute b into the equation:
Answer:
y = -2x + 4
Step-by-step explanation:
Slope: (4-2)/5-1) = 2/4 = 1/2
Slope of the perpendicular line: -2
y-intercept: 2 - (-2)(1) = 4