The equation shows the relationship between x and y:

Mathematics

2 answers:

Margarita [4]4 years ago

7 0

The slope is 7 and the y-intercept is (0,9)

Degger [83]4 years ago

6 0

i think it is -7 because you just subsitute it in

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Stem a choice b choice c choice d choice

MissTica

C is the answer for sure

8 0

3 years ago

If f(x)=2x^4-3x^3+2x^2+x-3, explain how you know that the equation f(x)=0 has at least one real root between x=1 and x=2

hodyreva [135]

Answer:

Step-by-step explanation:

by theorem :

f continu in [1 , 2]

f(1)×f(2) < 0 because : f(1) = -1 and f(2) = 15

so the equation f(x)=0 has at least one real root between x=1 and x=2

so :

7 0

3 years ago

A population of beetles is growing according to a linear growth model. The initial population (week 0) is

Airida [17]

Answer:

P=7.75t+13

t = 19 weeks

Step-by-step explanation:

Linear Modeling

Some situations can be modeled as linear functions. If we are in a situation where a linear model is suitable, then we need two sample points to make the model and predict future behaviors.

The linear function can be expressed in the slope-intercept format:

y = mx + b

Another equation of the line can be used when two points are given.

The equation of a line passing through points (x1,y1) and (x2,y2) can be written as follows:

$\displaystyle y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

The population of beetles is a situation where we must apply linear modeling. Two points are given. For time t=0, the population is P=13. The point is (0,13). For time t=8, P=75. The point is (8,75).

Find the equation of the line:

$\displaystyle P-P_1=\frac{P_2-P_1}{t_2-t_1}(t-t_1)$