What’s the answer to this ?

Mathematics

1 answer:

dybincka [34]3 years ago

7 0

Answer:

First choice

Step-by-step explanation:

It passes through (4, 0) and (0, -4)

Slope = (0 - (-4))/(4 - 0) = 4/4 = 1

so y - 0 = 1*(x - 4)

x - y = 4

8x - 8y = 32

First choice

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Write the following inequality in slope-intercept term. 5x-5y>{or equal to}70

HACTEHA [7]

5x - 5y > = 70...subtract 5x from both sides
-5y > = -5x + 70...divide by -5 on both sides, and change the inequality sign
y < = x - 14 <===

3 0

3 years ago

Help with this question please?

tatuchka [14]

Answer:

x^2/25 +y^2/9 = 1

Step-by-step explanation:

You can think of an ellipse as a circle with a different scale factor in the x-direction than in the y-direction. When either dimension is stretched by a factor of k, the corresponding variable (v) is replaced by (v/k).

Here, the unit circle

x^2 +y^2 = 1

is stretched by a factor of 3 vertically (in the y-direction) and a factor of 5 horizontally (in the x-direction). That means we can replace x with (x/5) and y with (y/3) in the above equation to get ...

(x/5)^2 +(y/3)^2 = 1

Traditionally, the denominator is written as a number, not a square, so the equation would be ...

x^2/25 +y^2/9 = 1