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3 years ago

A line passes through the point (- 1, 2) and has a slope of - 7 Write an equation in slope-intercept form for this line.

Mathematics

1 answer:

Ipatiy [6.2K]3 years ago

3 0

Answer:

y=-7x-5

Step-by-step explanation:

y-y1=m(x-x1)

y-2=-7(x-(-1))

y-2=-7(x+1)

y-2=-7x-7

y=-7x-7+2

y=-7x-5

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Can you rearrange it so T is the subject

OverLord2011 [107]

The formula after making t subject of the formula is:

$t = \frac{2-3q}{q+4}$

Step-by-step explanation:

Given formula is:

$q = \frac{2-4t}{t+3}$

To make t the subject of the formula we have to isolate t

So,

Cross-multiplying

$q(t+3) = 2-4t\\qt+3q = 2-4t$

Adding 4t on both sides

$qt+3q+4t = 2-4t+4t\\qt+3q+4t = 2$

Subtracting 3q from both sides

$qt+3q+4t-3q = 2-3q\\qt+4t = 2-3q$

Taking t common on left hand side

$t(q+4)=2-3q$

Dividing both sides by q+4

$\frac{t(q+4)}{q+4}=\frac{2-3q}{q+4}\\t = \frac{2-3q}{q+4}$

The formula after making t subject of the formula is:

$t = \frac{2-3q}{q+4}$

5 0

3 years ago

I need help asap please lol

Andreyy89

Answer:

91°

Step-by-step explanation:

x and 89 are linear equations

180 - 89 = 91

x = 91

3 0

3 years ago

Is the function linear, exponential or neither ? Help me please

Svetradugi [14.3K]

Hello! :)

$\large\boxed{\text{Linear.}}$

The function pictured is a straight line, so it has a constant slope for all x values.

A function that has the same slope on its domain and when graphed is a straight line is a linear function.

8 0

3 years ago

Does anyone know how to do this ?

Leni [432]

Answer:20

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Y = 2x – 4 y = -x + 5

Tasya [4]

Answer:

(3, 2)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Algebra I

Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

y = 2x - 4

y = -x + 5

Step 2: Solve for x

Substitution

Substitute in y: 2x - 4 = -x + 5
Add x to both sides: 3x - 4 = 5
Add 4 to both sides: 3x = 9
Isolate x: x = 3

Step 3: Solve for y

Define equation: y = -x + 5
Substitute in x: y = -3 + 5
Add: y = 2

7 0

3 years ago