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3 years ago

For the equation 4x+6y+24=0 find:

Mathematics

2 answers:

Mariulka [41]3 years ago

8 0

Answer:

a) y = -(2/3)x - 4

b) x-intercept = -6

y-intercept = -4

Step-by-step explanation:

Slope intercept form is

y = mx + b

4x + 6y + 24 = 0

Subtract 4x + 24 from both sides

6y = -4x - 24

Divide both sides by 6

y = -(2/3)x - 4

-------------------------------------

X intercept

at the x intercept y = 0

0 = (-2/3)x - 4

add (2/3) x to both sides

(2/3)x = - 4

Multiply both sides by 3/2

x = -12/2

x = -6

----------------------------

Y intercept

at the y-intercept x = 0

y = -(2/3)0 - 4

y =-4

asambeis [7]3 years ago

7 0

Answer:

x-intercept: -6 (-6,0 if you need full coordinates)

y-intercept: -4 (0,-4 for full coordinates)

Step-by-step explanation:

I'm in a rush but ask if you need steps

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3 years ago

Seiji and Gavin both worked hard over the summer. Together they earned a total of $450. Gavin earned $30 more than seiji.

jok3333 [9.3K]

Answer:

(a) $s+g=450\\g=s+30$

(b) The graph is shown below.

(c) Seiji earned $ 210 and Gavin earned $ 240.

Step-by-step explanation:

Given:

Sum of earnings of Seiji and Gavin = $ 450

Gavin earns $ 30 more that that of Seiji.

(a)

So, as per question, if s and g are the amounts earned by Seiji and Gavin respectively, then;

$s+g=450\\g=s+30$

(b)

The graph is plotted using the x and y intercepts of each line.

For the line, $s+g=450$ , the x intercept is at $g=0$ . So, x intercept is (450,0). Similarly, the y intercept is when s=0, which is (0,450). Draw a line passing through these two points. The red line represents $s+g=450$ .

We follow the same process to plot the next line. The x intercept is at (-30,0) and y intercept is at (0,30). Draw a line passing through these two points. The blue line represents $g=s+30$ .

The graph is shown below.

(c)

From the graph, the point of intersection of the two lines gives the earnings of each of the persons.

The $x$ value of the point of intersection is the earning of Seiji which is $ 210 and the $y$ value is the earning of Gavin which is $ 240 as shown in the graph.