PLEASE HELP on a TEST 2x - y = 5
X+ 3y = 7
What is the value of the y-determinant
7
22
9 ​

Question 1:

For this case we have the following system of equations:

2x - y = 5

x + 3y = 7

We rewrite the system of equations of the form:

Ax = b

Where,

A: coefficient matrix.

x: incognita vector

b: vector solution.

We have then:

We look for the determinant of A.

We have then:

the value of the system determinant is:

A = 7

Step-by-step explanation:

For the first one it's Using the slope-intercept form, the slope is 2 .

let y equal to

the total fare and x is the mile of taxi ride. so the equation is

y = 0.55x + 1.75

since susie has

$10 to spend for a taxi cab, so he can have

10 = 0.55x +

1.75

x = 15 miles of

taxi ride

so the system of

inequality is

10 < 0.55x +

1.75

x > 2

6.25 grams

step-by-step explanation: