What is the slope of the line that passes through the points (-2, 7) and (2,-5)?

Mathematics

1 answer:

Deffense [45]3 years ago

4 0

Answer:

Denote that line: y = ax + b

Line passes (-2, 7) and (2,-5):

=> -2a + b =7

=> 2a + b = -5

Add both side of above equations:

=> 2b = 2

=> b = 1

=> a = (-5 - 1)/2 = -3

=> Slope a = -3

Hope this helps!

You might be interested in

There is still controversy about whether or not Pluto should be considered a planet. Although planets are mainly defined by thei

andrezito [222]

9514 1404 393

Answer:

a) Pluto, Mercury, Mars, Venus, Earth, Neptune, Uranus, Saturn, Jupiter

b) 62

Step-by-step explanation:

When all the numbers are in scientific notation, as these are, the numbers with the smallest exponent are smaller. If numbers have the same exponent, the number with the smaller mantissa is smaller.

a) least-to-greatest diameter, the order is ...

Pluto, Mercury, Mars, Venus, Earth, Neptune, Uranus, Saturn, Jupiter

b) The ratio of diameters of Jupiter and Pluto is ...

(1.43×10^8)/(2.3×10^6) = 6.2×10^1 = 62

Jupiter's diameter is about 62 times that of Pluto.

_____

<em>Additional comment</em>

Your calculator or spreadsheet can work directly with numbers in scientific notation.

6 0

3 years ago

On a coordinate plane, a polygon has points (negative 3, 4), (3, 4), (3, negative 3), (negative 3, negative 2).

alexandr1967 [171]

Answer:

(-3,-2)

(-3,4)

(3,4)

(3,-3)

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Drag the simplified value into the box to match each expression.

Maru [420]

Answer:

The answers are as follows: 12 106 42

Step-by-step explanation:

Given: $18 - 4^2 + 5 \times 2$

Using BODMAS rule (Bracket, Of, Division, Multiplication, Addition and Subtraction) we would calculate $18 - 4^2$ separately and $5 \times 2$ separately and add them. So we have $18 - 16 + 10 = 2 + 10 =12$ .